Re: Oops: sysfs: duplicate filename 'usbdev3.3_ep81' can not be created

[Greg KH <greg@kroah.com>]

On Tue, Aug 18, 2009 at 09:53:51PM +0100, Christian Roche wrote:
> >> I just installed a 2.6.30 kernel:
> >>
> >> > uname -a
> >> Linux jimi 2.6.30.5-32.fc11.i586 #1 SMP Mon Aug 17 16:21:07 EDT 2009
> >> i686 i686 i386 GNU/Linux
> >>
> >> but it looks like I still have the pb. Below is what happens after the
> >> modeswitch, and the output of lsusb.
> >
> > It's harmless, only a warning, but I thought it really was fixed.  Oh
> > well, how about the 2.6.31-rc6 kernel?
> 
> Hi again Greg,
> 
> can I test again a 2.6.31 kernel with Fedora 11 ?  I don't find any
> build in this series on koji. Or should I try to compile it on my own
> ? ( argh! :-(  I haven't done that in a long time)

I do not know anything about Fedora kernels, sorry.

> Besides is this message really only a harmless warning ?

It should be.

> I'm unable to have the USB modem work on linux, and I thought this was
> due to this pb. However if you say this is really only a warning then
> I should look for another cause.
> 
> In particular I get the following error :
> > setserial /dev/ttyACM0
> /dev/ttyACM0: Input/output error

That's a different error.

> and similarly ttyACM0 (or ACM1, ACM2, which are created by the USB
> key) cannot be accessed with minicom, wvdial, etc. Do you have an idea
> what could be the culprit here ?

That's some other problem.  It would be great if you could try out the
2.6.31-rc kernel as work has gone on in this area.

thanks,

greg k-h